Aim: The aim of this study is to investigate the effects of litter size (singleton-twin) and gender on the immunoglobulin level and oxidative stress in Damascus goats.

Materials and Methods: Blood samples were taken with in 20 minutes after delivery from the Damascus goats delivering singleton and twin and non-pregnant Damascus goats that were served as control group. The values of immunoglobulin G (IgG), immunoglobulin M (IgM), malondialdehyde (MDA), nitricoxide (NO) and total antioxidant status (TAS) were measured in blood plasma.

Results: IgG and IgM levels in twin pregnant goats were higher than non-pregnant ones (P<0.05); whereas, MDA levels of twin pregnant goats were lower than non-pregnant ones (P<0.05). NO level in goats delivering twin was detected to be higher than pregnant goats delivering single and control group (P<0.05). Positive correlation was determined between IgG and IgM (r=0.946, P<0.001); whereas, no correlation was determined between other parameters (P<0.05). Although IgG, IgM, MDA, TAS and NO values were determined to be higher in goats delivering male kids than goats delivering female kids, no statistical difference was observed (P<0.05).

Conclusion: As a result, twin pregnancy may cause an increase in immunoglobulin levels but the gender of kids did not have any effect on immunoglobulin level and oxidative stress.